Also please show your answer written in the form of a symbolic equation. For exa

Question

Also please show your answer written in the form of a symbolic equation. For example if you are solving for acceleration, you should have a symbolic equation of the form "a = ...". A 22 kg child is sitting in a 14 kg wagon and throws a 4 kg medicine ball directly and horizontally out the back of the wagon with a velocity of 10 m/s. Assuming that the wagon will roll without friction, is on level ground, and is initially stationary, Use conservation of momentum principles to calculate the speed of the wagon immediately after the child throws the ball.

Explanation / Answer

Applying conservation of momentum

0 = 4 * 10 + 36 * v

=> v = - 40/36

         =    - 1.111 m/sec    --------> speed of wagon    ( opposite to direction of ball )

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